Why black smoke

Question

My Toyota Camry 200 smokes a lot and consumed fuel a lot too,and i have changed the air/fuel sensor still bring up the code po171,why?

Answer 1

Hi there,

There are several possible issues to cause this code, including; incorrect fuel pressure or intake air leaks. Here is a full list of possible causes for you.

  P0171 TOYOTA - Air/Fuel Mixture System Lean Bank 1

Read more: https://www.autocodes.com/p0171_toyota.html